Would be nice to rename this isse, and the related plugin, to "VIM-like" shortcuts. (Or, better yet (but harder): shift the focus explicitly toward customizable shortcuts.)

Most of those, who also desperately need keyboard shortcuts in general for Redmine, but come (e.g. here, via Google) from all the various other directions than vi, may feel a bit puzzled about why "the" keyboard shortcuts feature of Redmine should mean e.g. "k" for up and "j" for down. ;) Cheers!